Go to a specific date

Explore

The Public Inspection page
on FederalRegister.gov
offers a preview of documents scheduled to appear in the next day's
Federal Register issue. The Public Inspection page may also
include documents scheduled for later issues, at the request
of the issuing agency.

The Daily Journal of the United States Government

Legal Status

This site displays a prototype of a “Web 2.0” version of the daily
Federal Register. It is not an official legal edition of the Federal
Register, and does not replace the official print version or the official
electronic version on GPO’s govinfo.gov.

The documents posted on this site are XML renditions of published Federal
Register documents. Each document posted on the site includes a link to the
corresponding official PDF file on govinfo.gov. This prototype edition of the
daily Federal Register on FederalRegister.gov will remain an unofficial
informational resource until the Administrative Committee of the Federal
Register (ACFR) issues a regulation granting it official legal status.
For complete information about, and access to, our official publications
and services, go to
About the Federal Register
on NARA's archives.gov.

The OFR/GPO partnership is committed to presenting accurate and reliable
regulatory information on FederalRegister.gov with the objective of
establishing the XML-based Federal Register as an ACFR-sanctioned
publication in the future. While every effort has been made to ensure that
the material on FederalRegister.gov is accurately displayed, consistent with
the official SGML-based PDF version on govinfo.gov, those relying on it for
legal research should verify their results against an official edition of
the Federal Register. Until the ACFR grants it official status, the XML
rendition of the daily Federal Register on FederalRegister.gov does not
provide legal notice to the public or judicial notice to the courts.

Document Details

Document Statistics

Document page views are updated periodically throughout the day and are cumulative counts for this document including its time on Public Inspection. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day.

Page views:

56

as of 09/15/2019 at 4:15 am EDT

Document Statistics

Enhanced Content - Table of Contents

This tables of contents is a navigational tool, processed from the
headings within the legal text of Federal Register documents.
This repetition of headings to form internal navigation links
has no substantive legal effect.

Enhanced Content - Sharing

Enhanced Content - Document Print View

Enhanced Content - Document Print View

Enhanced Content - Document Tools

These tools are designed to help you understand the official document
better and aid in comparing the online edition to the print edition.

These markup elements allow the user to see how the document follows the
Document Drafting Handbook
that agencies use to create their documents. These can be useful
for better understanding how a document is structured but
are not part of the published document itself.

Enhanced Content - Developer Tools

Official Content

Official Content

Published Document

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Start PreambleStart Printed Page 28751

AGENCY:

Federal Aviation Administration, DOT.

ACTION:

Final rule; request for comments.

SUMMARY:

This amendment adopts a new airworthiness directive (AD) for the Aeronautical Accessories, Inc. (AAI) Low Skid Landing Gear Forward Crosstube (Crosstube) on certain Bell and Agusta model helicopters. This action requires replacing certain AAI serial-numbered crosstubes installed on these model helicopters. This amendment is prompted by the discovery of a defect in the raw material used in manufacturing certain crosstubes. The actions specified in this AD are intended to prevent failure of a crosstube and subsequent collapse of the landing gear.

DATES:

Effective June 8, 2010.

Comments for inclusion in the Rules Docket must be received on or before July 23, 2010.

You may get the service information identified in this AD from Aeronautical Accessories, Inc., P.O. Box 3689, Bristol, Tennessee 37625-3689, telephone (423) 538-5151 or 1-800-251-7094, fax (423) 538-8469.

Examining the Docket: You may examine the docket that contains the AD, any comments, and other information on the Internet at http://www.regulations.gov, or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Operations office (telephone (800) 647-5527) is located in Room W12-140 on the ground floor of the West Building at the street address stated in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt.

SUPPLEMENTARY INFORMATION:

This amendment adopts a new AD for the Bell Model 205A, 205A-1, 205B, 212, 412, 412EP, and 412CF and Agusta Model AB412, AB412EP helicopters. This action requires replacing certain AAI serial-numbered crosstubes installed on these model helicopters. This amendment is prompted by AAI's discovery of a defect in a batch of raw material used in the manufacture of these crosstubes. Preliminary tests indicate that surface cracking on the inner wall of the tubing was introduced during the manufacturing process. There have been no failures reported in the field. The defect was discovered during the forming operation at AAI. This condition, if not corrected, could result in failure of a crosstube and subsequent collapse of the landing gear.

We have reviewed AAI Alert Service Bulletin No. AA-10012, dated March 5, 2010 (ASB), which describes a possible defect in the material used to manufacture the crosstube, part number (P/N) 212-320-103, which is also included as part of AAI Low Skid Gear Assembly Kits, P/N 412-320-500 and 412-320-502. The ASB specifies locating the serial number (S/N) of each crosstube, and replacing, within 25 hours time-in-service (TIS), each crosstube within the S/N range of AA-574 through AA-628, by following the replacement procedures contained in the Instructions for Continued Airworthiness AA-01136.

This unsafe condition is likely to exist or develop on other helicopters of these same type designs with an affected crosstube. Therefore, this AD is being issued to prevent failure of a crosstube and subsequent collapse of the landing gear. This AD requires, within 25 hours TIS, replacing any affected crosstube with an airworthy crosstube.

The short compliance time involved is required because the previously described critical unsafe condition can adversely affect the structural integrity of the helicopter. Therefore, replacing any affected crosstube with an airworthy crosstube is required within 25 hours TIS, and this AD must be issued immediately.

Since a situation exists that requires the immediate adoption of this regulation, it is found that notice and opportunity for prior public comment hereon are impracticable, and that good cause exists for making this amendment effective in less than 30 days.

We estimate that this AD will affect 19 helicopters, and replacing each affected crosstube will take about 5 work hours at an average labor rate of $85 per work hour. Required parts will cost about $4,925 per helicopter. Based on these figures, we estimate the total cost impact of the AD on U.S. operators to be $101,650.

Comments Invited

This AD is a final rule that involves requirements that affect flight safety and was not preceded by notice and an opportunity for public comment; however, we invite you to submit any written data, views, or arguments regarding this AD. Send your comments to an address listed under ADDRESSES. Include “Docket No. FAA-2010-0487; Directorate Identifier 2010-SW-032-AD” at the beginning of your comments. We specifically invite comments on the Start Printed Page 28752overall regulatory, economic, environmental, and energy aspects of the AD. We will consider all comments received by the closing date and may amend the AD in light of those comments.

We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this AD. Using the search function of our docket Web site, you can find and read the comments to any of our dockets, including the name of the individual who sent the comment. You may review the DOT's complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477-78).

Regulatory Findings

We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government.

For the reasons discussed above, I certify that the regulation:

1. Is not a “significant regulatory action” under Executive Order 12866;

2. Is not a “significant rule” under the DOT Regulatory Policies and Procedures (44 FR 11032, February 26, 1979); and

3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

We prepared an economic evaluation of the estimated costs to comply with this AD. See the AD docket to examine the economic evaluation.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority.

We are issuing this rulemaking under the authority described in subtitle VII, part A, subpart III, section 44701, “General requirements.” Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.